1. To stretch leather shoes a little, use a shoe stretcher and a shoe-stretch spray, which you can find at shoe-repair shops.
2. Apply the spray inside the shoe, and add a stretcher, if you have one.
3. This may not work, so the take shoes to a shoe-repair shop that has a stretching machine. Especially if you love them! It’s worth the money.
4. To prevent this problem. Never buy shoes (especially man-made) that are too tight or too small, which may be tempting, particularly when they are on sale. But they will never fit properly or be able to be stretched enough to be comfortable.